From ec407bae9147ec2bb33353dd3d0b9cdec8c49cdb Mon Sep 17 00:00:00 2001
From: gnipbao <gnipbao@gmail.com>
Date: Sat, 16 Dec 2017 21:24:29 +0800
Subject: [PATCH] add camelize and decamelize.

---
 snippets/camelize.md   | 17 +++++++++++++++++
 snippets/decamelize.md | 16 ++++++++++++++++
 tag_database           |  2 ++
 3 files changed, 35 insertions(+)
 create mode 100644 snippets/camelize.md
 create mode 100644 snippets/decamelize.md

diff --git a/snippets/camelize.md b/snippets/camelize.md
new file mode 100644
index 000000000..937a974e8
--- /dev/null
+++ b/snippets/camelize.md
@@ -0,0 +1,17 @@
+### Camelize
+
+Camelize a string, cutting the string by multiple separators like
+ hyphens, underscores and spaces.
+
+```js
+/**
+ * @param {str} string str to camelize
+ * @return string Camelized text
+ */
+const camelize = str => str.replace(/^([A-Z])|[\s-_]+(\w)/g, 
+  (match, p1, p2, offset) =>  p2 ? p2.toUpperCase() : p1.toLowerCase());
+// camelize("some_database_field_name") -> 'someDatabaseFieldName'
+// camelize("Some label that needs to be camelized") -> 'someLabelThatNeedsToBeCamelized'
+// camelize("some-javascript-property") -> 'someJavascriptProperty'
+// camelize("some-mixed_string with spaces_underscores-and-hyphens") -> 'someMixedStringWithSpacesUnderscoresAndHyphens'
+```
diff --git a/snippets/decamelize.md b/snippets/decamelize.md
new file mode 100644
index 000000000..ab5ac6fa7
--- /dev/null
+++ b/snippets/decamelize.md
@@ -0,0 +1,16 @@
+### decamelize
+
+Decamelizes a string with/without a custom separator (underscore by default).
+
+```js
+const decamelize = (str, separator) => {
+  separator = typeof separator === 'undefined' ? '_' : separator;
+  return str
+        .replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2')
+        .replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + separator + '$2')
+        .toLowerCase();
+}
+// decamelize('someDatabaseFieldName', ' ') -> 'some database field name'
+// decamelize('someLabelThatNeedsToBeCamelized', '-') -> 'some-label-that-needs-to-be-camelized'
+// decamelize('someJavascriptProperty', '_') -> 'some_javascript_property'
+```
diff --git a/tag_database b/tag_database
index b2535a484..aed0ec9d8 100644
--- a/tag_database
+++ b/tag_database
@@ -5,6 +5,7 @@ array-intersection:array
 array-union:array
 average-of-array-of-numbers:array
 bottom-visible:browser
+camelize:string
 capitalize-first-letter-of-every-word:string
 capitalize-first-letter:string
 chain-asynchronous-functions:function
@@ -15,6 +16,7 @@ compact:array
 count-occurrences-of-a-value-in-array:array
 current-URL:browser
 curry:function
+decamelize:string
 deep-flatten-array:array
 distance-between-two-points:math
 divisible-by-number:math